6.11 Leases

The movements in right-of-use assets were as follows:

x € 1,000

2022	01 January 2022	Depreciation	Additions	Changes in lease period and other changes	31 December 2022

Office buildings	38,869	-8,569	2,185	6,206	38,691
Vehicle fleet	25,895	-11,262	11,985	-449	26,169
Other equipment	8,870	-4,575	2,298	532	7,125
Total	73,634	-24,406	16,468	6,289	71,985

2021	01 January 2021	Depreciation	Additions	Changes in lease period and other changes	31 December 2021

Office buildings	44,975	-8,136	1,539	491	38,869
Vehicle fleet	27,481	-10,835	9,102	147	25,895
Other equipment	9,141	-4,248	3,532	445	8,870
Total	81,597	-23,219	14,173	1,083	73,634

The amounts in the column headed 'Changes in lease period and other changes' are connected with lease renewals and rent increases.

The movement in the lease liabilities was as follows:

x € 1,000

2022	01 January 2022	Additions	Lease payments	Interest	Changes in lease period and other changes	31 December 2022

Office buildings	38,232	2,064	-9,727	1,193	6,377	38,139
Vehicle fleet	26,465	11,886	-11,772	617	-517	26,679
Other equipment	8,987	2,298	-4,952	303	736	7,372
Total	73,684	16,248	-26,451	2,113	6,596	72,190

2021	01 January 2021	Additions	Lease payments	Interest	Changes in lease period and other changes	31 December 2021

Office buildings	43,875	1,539	-8,907	1,377	348	38,232
Vehicle fleet	27,960	9,102	-11,426	680	149	26,465
Other equipment	9,288	3,532	-4,509	318	358	8,987
Total	81,123	14,173	-24,842	2,375	855	73,684

The maturity of the lease liabilities (based on due dates of the lease instalments) per category of underlying asset can be analysed as follows:

x € 1,000

31 December 2022	Total lease instalments payable	< 1 year	1-5 years	> 5 years

Office buildings	43,932	10,276	26,992	6,664
Vehicle fleet	27,544	11,332	16,212	0
Other equipment	7,797	3,411	4,182	204
Total	79,273	25,019	47,386	6,868

31 December 2021	Total lease instalments payable	< 1 year	1-5 years	> 5 years

Office buildings	41,256	8,698	24,223	8,335
Vehicle fleet	27,468	10,477	16,983	8
Other equipment	9,590	3,662	5,410	518
Total	78,314	22,837	46,616	8,861

The interest expense on the lease liabilities in 2022 amounted to €2.1 million (2021: €2.4 million).

The cost in 2022 of short-term leases for which right-of-use assets have not been recognised amounted to €94 million (2021: €98 million). This largely concerns short-term equipment rental on projects.

The total cash outflow relating to leases amounted to €123 million in 2022 (2021 €125 million). This includes the aforementioned short-term rental of equipment on projects.

The weighted average incremental borrowing rate that has been used in determining the amount of the liability in 2022 is 3% (2021: 3%).